RELN and Alzheimer disease: The densitometric analysis of the ≈420 kD Reelin band in developed films determined non-significant differences in levels of Reelin in AD(V-VI) and PDD compared to nND post-mortem brain samples (Figure 4A) (i.e., AD(V-VI): 0.6184 ± 0.363, mean ± S.D. and PDD: 0.6155 ± 0.194, mean ± S.D., compared to nND: 0.640 ± 0.318, mean ± S.D.).